Sadly this is what the Pentominium looks like now. Work on what would've been the 2nd tallest building in the world at 516 meters tall, started in July 2009 and was due to be completed in 2013. In May 2011 work stopped at the 22nd floor, due to the construction company falling behind with their loan repayments.
Now the Pentominium stands dwarfed by the completed residential buildings at Dubai Marina. Sadly it doesn't look like the building will ever be completed now as the views of the sea are no longer available due to recent construction of surrounding skyscrapers.
I can't find anything on the internet other than a proposed plan to restart work in 2014, which obviously never happened, but I'm keeping my eye on it.
You can see the other building projects in Dubai and around the World, I've been following below:
Week 158 Bluewater Islands and Dubai Eye. Man made island a 210m high Big Wheel
Week 159 Dubai Marina - Reflections
Week 160 Dubai Frame. A window between the Old and New Dubai and a 150m high glass floor.
Week 161 Dubai Marina 3 years apart.New Metro Line for Expo 2020
Week 164 Hoover Dam 2002 - 2010
Week 165 Dubai Opera House What a difference a year makes